Wielding a Red Sword (Book Four of Incarnations of Immortality)

Mym was a dutiful son, but rather than agree to his father's choice for his marriage, he took up the Red Sword, symbol of office of the Incarnation of War, in order to ameliorate some of the suffering caused by Earth's constant petty wars. But Mym discovered that Satan was waiting to trap him, and he must now take desperate measures to outwit the evil genius who aimed to destroy the world....